Fair Value Measurements (Tables)

3 Months Ended

Jun. 30, 2015

Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis [Table Text Block]

Assets and liabilities measured at fair value on a recurring basis at June 30, 2015 and March 31, 2015 are categorized in the tables below based on the lowest level of significant input to the valuation. During the periods presented, there were no transfers between fair value hierarchical levels.



	Balance at		Quoted Prices in Active Markets Level 1		Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3
(In thousands)	June 30, 2015		Quoted Prices in Active Markets Level 1		Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3
Assets:
Deferred compensation plan assets	$	17,107	$	17,107	$	—	$	—

Liabilities:
Deferred compensation plan liabilities	$	17,107	$	17,107	$	—	$	—



	Balance at		Quoted Prices in Active Markets Level 1		Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3
(In thousands)	March 31, 2015		Quoted Prices in Active Markets Level 1		Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3
Assets:
Deferred compensation plan assets	$	16,288	$	16,288	$	—	$	—

Liabilities:
Deferred compensation plan liabilities	$	16,288	$	16,288	$	—	$	—

Fair Value Of Debt [Table Text Block]

The fair values of the fixed rate notes disclosed in the following table were determined based on quoted prices from the broker/dealer market, observable market inputs for similarly termed treasury notes adjusted for the Company’s credit spread and inputs management believes a market participant would use in determining imputed interest for obligations without a stated interest rate (Level 2). The fair values of the revolving credit borrowings, securitized receivables and commercial paper approximate their carrying values (see Note 7).



	Carrying Value at		Fair Value at		Carrying Value at		Fair Value at
(In thousands)	June 30, 2015		June 30, 2015		March 31, 2015		March 31, 2015
3.25% senior notes due 2015	$	249,981	$	250,945	$	249,962	$	252,520
2.95% senior notes due 2016	249,936		253,708		249,918		254,953
1.65% senior notes due 2018	324,715		323,105		324,688		323,921
2.375% senior notes due 2020	274,802		271,816		274,791		274,821
2.90% senior notes due 2022	249,794		241,933		249,787		249,028
3.65% senior notes due 2024	299,476		299,130		299,462		310,500